Creative Commons licensing permits bloggers and journalists access to photos taken by other people, for absolutely no charge. It’s a great way to engage readers with more visually interesting content, and to expose photographers’ work to a new audience.

But there are many rules and regulations you must follow to use the photos for free and without risking liability — a small price to pay. It can get a little tricky, so familiarize yourself with the rules in the following infographic to avoid the most common licensing land mines.